Archives of Craniofacial Surgery (대한두개안면성형외과학회지)

Korean Cleft Palate-Craniofacial Association (대한두개안면성형외과학회)
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Facial artery: anatomical variations in the perioral region in cadavers

  • Vu Hoang Nguyen (Department of Anatomy, University of Medicine and Pharmacy) ;
  • Lin Cheng-Kuan (Department of Environmental Health, Harvard Chan School of Public Health) ;
  • Tuan Anh Nguyen (Department of Plastic and Cosmetic Surgery, University of Medicine and Pharmacy) ;
  • Trang Huu Ngoc Thao Cai (Department of Plastic and Cosmetic Surgery, University of Medicine and Pharmacy)
  • Received : 2023.09.25
  • Accepted : 2023.12.07
  • Published : 2023.12.20
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Abstract

Background: In recent years, there has been an increase in reports of perioral vascular complications resulting from filler injections, such as necrosis of the lip or alar rim, occlusion, and in severe cases, blindness. Conversely, the use of perioral arterial flaps is becoming more prevalent in the treatment of cleft lips, cancer, and trauma. A thorough understanding of perioral arteries is essential to minimize complications and maximize the success of these flaps. However, the course of the facial artery (FA) in the perioral region remains incompletely understood. The aim of this study was to describe the variations of the FA in the perioral region. Methods: We dissected 52 embalmed and formaldehyde-fixed Vietnamese cadavers. We then studied the size and distribution of perioral arteries in 102 specimens. Results: The superior labial artery (SLA) was the most common branch, occurring in 87.25% of cadavers, followed by the inferior labial artery (ILA) at 78.43%. The SLA primarily originated above the mouth corner (cheilion), accounting for 91.01% of cases, and predominantly exhibited a tortuous course within the submucosa (78.65%). The ILA's branching pattern varied, but it was primarily located below the cheilion (91.25%). The ILA also followed a twisted path, generally within the submucosa. The ILA exhibited two patterns: the typical pattern, distributed at the vermilion border of the lower lip (8.82%), and the horizontal labiomental artery pattern, which ran horizontally in the middle of the lower lip area (69.61%). At their origin, the SLA and ILA had average external diameters of 1.29 mm and 1.28 mm, respectively. Conclusion: Numerous anatomical variations in the FA in the perioral region were found. A detailed anatomic description, suggested landmarks, and angiography before the procedure will be useful to help doctors avoid complications.

Keywords

Acknowledgement

This study was supported by the University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam.

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